JS传参及动态修改页面布局
时间：2021-08-11 08:24:36|栏目：JavaScript代码|点击： 次
一个关于JS传参及动态修改页面布局的简单小例子。
效果图：
HTML:
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<link rel="stylesheet" href="css/style.css" rel="external nofollow" />
</head>
<body>
<div id="button"><h1>请为下面的DIV设置样式：</h1><div>点击设置</div></div>
<div id="set">
<div class="set1"><span>请选择背景色：</span><span onclick="cl('red')">红</span><span onclick="cl('yellow')">黄</span><span onclick="cl('blue')">蓝</span></div>
<div class="set2"><span>请选择宽(px)：</span><span onclick="wd(200)">200</span><span onclick="wd(300)">300</span><span onclick="wd(400)">400</span></div>
<div class="set2"><span>请选择高(px)：</span><span onclick="hd(200)">200</span><span onclick="hd(300)">300</span><span onclick="hd(400)">400</span></div>
<span class="btn" onclick="reset()">恢复</span>
<span class="btn" onclick="apply()">确定</span>
</div>
<div id="box"></div>
<script type="text/javascript" src="js/js.js"></script>
</body>
</html>
CSS:
/*top:26%; left:40%;*/
#box{width:100px; height: 100px; border:4px black solid;margin-top:100px;}
#button div{background: red; width:100px; height:40px; float:left; color:white; text-align: center; line-height: 40px; cursor: pointer;}
#set{width:20%; height:28%; border:15px rgb(156,148,156) solid; background:white; position: absolute; top:300px; left:300px; box-shadow: 0 0 8px gray; display:none;}
#set div{height: 40px; margin: 20px auto;}
#set div span{width:45px; height:40px; display:block; float:left; margin-left:10px; color:white; line-height:40px; text-align:center; cursor:pointer;}
#set div span:hover{border:1px black solid}
#set div span:nth-of-type(1){width:auto; color:black; font:18px/40px "微软雅黑"; margin-left:12%; border:none; cursor:auto;} /*:nth-of-type()表示同级同容器下该种类型的第几个标签括号内的数字即指第几个，从1开始*/
#set .set1 span:nth-of-type(2){background:rgb(230,46,0); margin-left:5px;}
#set .set1 span:nth-of-type(2):hover{background:red}
#set .set1 span:nth-of-type(3){background:rgb(239,189,0)}
#set .set1 span:nth-of-type(3):hover{background:yellow}
#set .set1 span:nth-of-type(4){background:rgb(90,148,239)}
#set .set1 span:nth-of-type(4):hover{background:blue}
#set .set2 span{border:1px rgb(198,198,198) solid; color:rgb(136,140,143)}
#set .set2 span:nth-of-type(1):hover{background:white;}
#set .set2 span:nth-of-type(2){background:rgb(239,239,239); margin-left:5px;}
#set .set2 span:nth-of-type(3){background:rgb(239,239,239)}
#set .set2 span:nth-of-type(4){background:rgb(239,239,239)}
#set .set2 span:hover{background:rgb(239,148,0)}
#set .btn{width:60px; height:30px; background:#002952; color:white; display:block; float:left; margin-left:10px; margin-top:10px; text-align:center; line-height:30px; cursor:pointer;}
#set span:nth-of-type(1){margin-left:32%;}
JS:
onload = function(){ //加载完毕给div添加点击事件，可以不这么做，像下面的reset / apply一样建立一个函数并在该div上写上Onclick点击事件调用函数即可
var btn = document.getElementById('button').getElementsByTagName('div');
btn[0].onclick = function(){
document.getElementById('set').style.display = 'block';
}
}
var box = document.getElementById('box'); //建立全局变量获取DIV对象
function wd(x){ //改变宽度
box.style.width = x + 'px';
}
function hd(x){ //改变高度
box.style.height = x + 'px';
}
function cl(x){ //改变颜色
box.style.background = x;
}
function apply(){
document.getElementById('set').style.display = 'none';
}
function reset(){ //恢复DIV原来的布局
box.style.width = 100 + 'px';
box.style.height = 100 + 'px';
box.style.background = 'white';
}
